function pig(input) {
  let food = Number(input[0]) * 1000;
  let hay = Number(input[1]) * 1000;
  let cover = Number(input[2]) * 1000;

  let guineaKG = Number(input[3]) * 1000;
  let days = 30;

  for (index = 1; index <= days; index++) {
    food -= 300;

    if (food <= 0) {
      break;
    }
    if (food > 0) {
      if (index % 2 === 0) {
        hay -= food * 0.05;
        if (hay <= 0) {
          break;
        }
      }
      if (index % 3 === 0) {
        cover -= guineaKG / 3;
        if (cover <= 0) {
          break;
        }
      }
    }
  }

  if (food <= 0 || hay <= 0 || cover <= 0) {  // проврката
    console.log("Merry must go to the pet store!");
  } else {
    console.log(
      `Everything is fine! Puppy is happy! Food: ${(food / 1000).toFixed(
        2
      )}, Hay: ${(hay / 1000).toFixed(2)}, Cover: ${(cover / 1000).toFixed(2)}.`
    );
  }
}